Slurry shield portal seal structure that starts

The utility model discloses a slurry shield portal seal structure that starts, including setting up at the tunnel portal from interior to exterior of department parallel first extension steel loop, second extension steel loop and the clamping rings of laying in proper order, first extension steel loop and portal steel loop fixed connection, be provided with twice steel brush, twice on the inner wall circumferencial direction of portal steel loop the steel brush is laid along the extending direction of portal steel loop, install first curtain cloth rubber slab between first extension steel loop and the second extension steel loop, the second extends installs second way curtain cloth rubber slab between steel loop and the clamping rings, the lateral surface of clamping rings is provided with curtain cloth pressure plate assembly. The utility model discloses improved sealed effect greatly, can effectively prevent shield structure machine start the muddy water storehouse when establishhing mud spill over, avoid b